Malicious PDF — malware analysis report

Static analysis result for SHA-256 afbf200db6776251…

MALICIOUS

PDF

22.3 KB Created: 2021-05-28 10:32:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 43a0ba7679d331f1aa423f88d84ea88f SHA-1: 85a987cf775eb887ff22cd9529f129aa871a9cdb SHA-256: afbf200db6776251ab22fafc305295137906a1ddfe82de60f6ee9c18d66aab0b
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF is identified as an image-only lure, typical of phishing attempts, containing a clickable link that leads to a URL shortener. The document body is heavily obfuscated and appears to contain non-standard characters, suggesting an attempt to hide malicious content. No scripts were extracted, but the presence of a URL shortener indicates a likely redirection to a malicious site for further exploitation.

Machine Learning

  • Nyx PDF Classifier clean score 0.1174

Heuristics 3

  • Image-only PDF lure links through URL shortener high PDF_IMAGE_LURE_SHORTENER_LINK
    PDF is image-heavy with little real text and its clickable action points to a URL shortener. This is a high-confidence credential-phishing carrier shape: the visible page is a screenshot-like prompt while the destination is hidden behind redirect infrastructure.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 22 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://mrizi.page.link/R6GT In PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003af1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3AF1 15748 bytes
SHA-256: b754b293910fc481f1045a7ad13cd835d83c618ec2c6b389a03e38b79f803901

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